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A particle is moving on a straight line ...

A particle is moving on a straight line with velocity (v) as a function of time (t) according to relation `v = (5t^(2) - 3t + 2)m//s` . Now give the answer of following questions :
Velocity of particle at t = 3 sec. is :

A

`30 m//s`

B

`38 m//s`

C

`22 m//s`

D

`36 m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
Velocity of ………….
`V=(5t^(2)-3t+2)m//s`
`V_((t=3))=5(3)^(2)-3(3)+2=45-9+2=38m//s`.
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